Mask design and background studies for TESLA

Abstract

A detailed design of the low angle region of the TESLA detector has been developed. Fast and radiation hard sampling calorimeters provide instrumentation down to θ=4.6 mrad for physics and luminosity monitoring. Beam induced background sources, especially beamstrahlung pairs, hadronic background, neutrons, synchrotron radiation, beam gas induced background and muons have been studied. All background rates in the detector are at tolerable levels.